| /* |
| * SPDX-License-Identifier: GPL-2.0-or-later |
| * |
| * QEMU Vitual M68K Machine |
| * |
| * (c) 2020 Laurent Vivier <laurent@vivier.eu> |
| * |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qemu/units.h" |
| #include "qemu/guest-random.h" |
| #include "sysemu/sysemu.h" |
| #include "cpu.h" |
| #include "hw/boards.h" |
| #include "hw/qdev-properties.h" |
| #include "elf.h" |
| #include "hw/loader.h" |
| #include "ui/console.h" |
| #include "hw/sysbus.h" |
| #include "standard-headers/asm-m68k/bootinfo.h" |
| #include "standard-headers/asm-m68k/bootinfo-virt.h" |
| #include "bootinfo.h" |
| #include "net/net.h" |
| #include "qapi/error.h" |
| #include "sysemu/qtest.h" |
| #include "sysemu/runstate.h" |
| #include "sysemu/reset.h" |
| |
| #include "hw/intc/m68k_irqc.h" |
| #include "hw/misc/virt_ctrl.h" |
| #include "hw/char/goldfish_tty.h" |
| #include "hw/rtc/goldfish_rtc.h" |
| #include "hw/intc/goldfish_pic.h" |
| #include "hw/virtio/virtio-mmio.h" |
| #include "hw/virtio/virtio-blk.h" |
| |
| /* |
| * 6 goldfish-pic for CPU IRQ #1 to IRQ #6 |
| * CPU IRQ #1 -> PIC #1 |
| * IRQ #1 to IRQ #31 -> unused |
| * IRQ #32 -> goldfish-tty |
| * CPU IRQ #2 -> PIC #2 |
| * IRQ #1 to IRQ #32 -> virtio-mmio from 1 to 32 |
| * CPU IRQ #3 -> PIC #3 |
| * IRQ #1 to IRQ #32 -> virtio-mmio from 33 to 64 |
| * CPU IRQ #4 -> PIC #4 |
| * IRQ #1 to IRQ #32 -> virtio-mmio from 65 to 96 |
| * CPU IRQ #5 -> PIC #5 |
| * IRQ #1 to IRQ #32 -> virtio-mmio from 97 to 128 |
| * CPU IRQ #6 -> PIC #6 |
| * IRQ #1 -> goldfish-rtc |
| * IRQ #2 to IRQ #32 -> unused |
| * CPU IRQ #7 -> NMI |
| */ |
| |
| #define PIC_IRQ_BASE(num) (8 + (num - 1) * 32) |
| #define PIC_IRQ(num, irq) (PIC_IRQ_BASE(num) + irq - 1) |
| #define PIC_GPIO(pic_irq) (qdev_get_gpio_in(pic_dev[(pic_irq - 8) / 32], \ |
| (pic_irq - 8) % 32)) |
| |
| #define VIRT_GF_PIC_MMIO_BASE 0xff000000 /* MMIO: 0xff000000 - 0xff005fff */ |
| #define VIRT_GF_PIC_IRQ_BASE 1 /* IRQ: #1 -> #6 */ |
| #define VIRT_GF_PIC_NB 6 |
| |
| /* 2 goldfish-rtc (and timer) */ |
| #define VIRT_GF_RTC_MMIO_BASE 0xff006000 /* MMIO: 0xff006000 - 0xff007fff */ |
| #define VIRT_GF_RTC_IRQ_BASE PIC_IRQ(6, 1) /* PIC: #6, IRQ: #1 */ |
| #define VIRT_GF_RTC_NB 2 |
| |
| /* 1 goldfish-tty */ |
| #define VIRT_GF_TTY_MMIO_BASE 0xff008000 /* MMIO: 0xff008000 - 0xff008fff */ |
| #define VIRT_GF_TTY_IRQ_BASE PIC_IRQ(1, 32) /* PIC: #1, IRQ: #32 */ |
| |
| /* 1 virt-ctrl */ |
| #define VIRT_CTRL_MMIO_BASE 0xff009000 /* MMIO: 0xff009000 - 0xff009fff */ |
| #define VIRT_CTRL_IRQ_BASE PIC_IRQ(1, 1) /* PIC: #1, IRQ: #1 */ |
| |
| /* |
| * virtio-mmio size is 0x200 bytes |
| * we use 4 goldfish-pic to attach them, |
| * we can attach 32 virtio devices / goldfish-pic |
| * -> we can manage 32 * 4 = 128 virtio devices |
| */ |
| #define VIRT_VIRTIO_MMIO_BASE 0xff010000 /* MMIO: 0xff010000 - 0xff01ffff */ |
| #define VIRT_VIRTIO_IRQ_BASE PIC_IRQ(2, 1) /* PIC: 2, 3, 4, 5, IRQ: ALL */ |
| |
| typedef struct { |
| M68kCPU *cpu; |
| hwaddr initial_pc; |
| hwaddr initial_stack; |
| } ResetInfo; |
| |
| static void main_cpu_reset(void *opaque) |
| { |
| ResetInfo *reset_info = opaque; |
| M68kCPU *cpu = reset_info->cpu; |
| CPUState *cs = CPU(cpu); |
| |
| cpu_reset(cs); |
| cpu->env.aregs[7] = reset_info->initial_stack; |
| cpu->env.pc = reset_info->initial_pc; |
| } |
| |
| static void rerandomize_rng_seed(void *opaque) |
| { |
| struct bi_record *rng_seed = opaque; |
| qemu_guest_getrandom_nofail((void *)rng_seed->data + 2, |
| be16_to_cpu(*(uint16_t *)rng_seed->data)); |
| } |
| |
| static void virt_init(MachineState *machine) |
| { |
| M68kCPU *cpu = NULL; |
| int32_t kernel_size; |
| uint64_t elf_entry; |
| ram_addr_t initrd_base; |
| int32_t initrd_size; |
| ram_addr_t ram_size = machine->ram_size; |
| const char *kernel_filename = machine->kernel_filename; |
| const char *initrd_filename = machine->initrd_filename; |
| const char *kernel_cmdline = machine->kernel_cmdline; |
| hwaddr parameters_base; |
| DeviceState *dev; |
| DeviceState *irqc_dev; |
| DeviceState *pic_dev[VIRT_GF_PIC_NB]; |
| SysBusDevice *sysbus; |
| hwaddr io_base; |
| int i; |
| ResetInfo *reset_info; |
| uint8_t rng_seed[32]; |
| |
| if (ram_size > 3399672 * KiB) { |
| /* |
| * The physical memory can be up to 4 GiB - 16 MiB, but linux |
| * kernel crashes after this limit (~ 3.2 GiB) |
| */ |
| error_report("Too much memory for this machine: %" PRId64 " KiB, " |
| "maximum 3399672 KiB", ram_size / KiB); |
| exit(1); |
| } |
| |
| reset_info = g_new0(ResetInfo, 1); |
| |
| /* init CPUs */ |
| cpu = M68K_CPU(cpu_create(machine->cpu_type)); |
| |
| reset_info->cpu = cpu; |
| qemu_register_reset(main_cpu_reset, reset_info); |
| |
| /* RAM */ |
| memory_region_add_subregion(get_system_memory(), 0, machine->ram); |
| |
| /* IRQ Controller */ |
| |
| irqc_dev = qdev_new(TYPE_M68K_IRQC); |
| sysbus_realize_and_unref(SYS_BUS_DEVICE(irqc_dev), &error_fatal); |
| |
| /* |
| * 6 goldfish-pic |
| * |
| * map: 0xff000000 - 0xff006fff = 28 KiB |
| * IRQ: #1 (lower priority) -> #6 (higher priority) |
| * |
| */ |
| io_base = VIRT_GF_PIC_MMIO_BASE; |
| for (i = 0; i < VIRT_GF_PIC_NB; i++) { |
| pic_dev[i] = qdev_new(TYPE_GOLDFISH_PIC); |
| sysbus = SYS_BUS_DEVICE(pic_dev[i]); |
| qdev_prop_set_uint8(pic_dev[i], "index", i); |
| sysbus_realize_and_unref(sysbus, &error_fatal); |
| |
| sysbus_mmio_map(sysbus, 0, io_base); |
| sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(irqc_dev, i)); |
| |
| io_base += 0x1000; |
| } |
| |
| /* goldfish-rtc */ |
| io_base = VIRT_GF_RTC_MMIO_BASE; |
| for (i = 0; i < VIRT_GF_RTC_NB; i++) { |
| dev = qdev_new(TYPE_GOLDFISH_RTC); |
| qdev_prop_set_bit(dev, "big-endian", true); |
| sysbus = SYS_BUS_DEVICE(dev); |
| sysbus_realize_and_unref(sysbus, &error_fatal); |
| sysbus_mmio_map(sysbus, 0, io_base); |
| sysbus_connect_irq(sysbus, 0, PIC_GPIO(VIRT_GF_RTC_IRQ_BASE + i)); |
| |
| io_base += 0x1000; |
| } |
| |
| /* goldfish-tty */ |
| dev = qdev_new(TYPE_GOLDFISH_TTY); |
| sysbus = SYS_BUS_DEVICE(dev); |
| qdev_prop_set_chr(dev, "chardev", serial_hd(0)); |
| sysbus_realize_and_unref(sysbus, &error_fatal); |
| sysbus_mmio_map(sysbus, 0, VIRT_GF_TTY_MMIO_BASE); |
| sysbus_connect_irq(sysbus, 0, PIC_GPIO(VIRT_GF_TTY_IRQ_BASE)); |
| |
| /* virt controller */ |
| dev = qdev_new(TYPE_VIRT_CTRL); |
| sysbus = SYS_BUS_DEVICE(dev); |
| sysbus_realize_and_unref(sysbus, &error_fatal); |
| sysbus_mmio_map(sysbus, 0, VIRT_CTRL_MMIO_BASE); |
| sysbus_connect_irq(sysbus, 0, PIC_GPIO(VIRT_CTRL_IRQ_BASE)); |
| |
| /* virtio-mmio */ |
| io_base = VIRT_VIRTIO_MMIO_BASE; |
| for (i = 0; i < 128; i++) { |
| dev = qdev_new(TYPE_VIRTIO_MMIO); |
| qdev_prop_set_bit(dev, "force-legacy", false); |
| sysbus = SYS_BUS_DEVICE(dev); |
| sysbus_realize_and_unref(sysbus, &error_fatal); |
| sysbus_connect_irq(sysbus, 0, PIC_GPIO(VIRT_VIRTIO_IRQ_BASE + i)); |
| sysbus_mmio_map(sysbus, 0, io_base); |
| io_base += 0x200; |
| } |
| |
| if (kernel_filename) { |
| CPUState *cs = CPU(cpu); |
| uint64_t high; |
| void *param_blob, *param_ptr, *param_rng_seed; |
| |
| if (kernel_cmdline) { |
| param_blob = g_malloc(strlen(kernel_cmdline) + 1024); |
| } else { |
| param_blob = g_malloc(1024); |
| } |
| |
| kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, |
| &elf_entry, NULL, &high, NULL, 1, |
| EM_68K, 0, 0); |
| if (kernel_size < 0) { |
| error_report("could not load kernel '%s'", kernel_filename); |
| exit(1); |
| } |
| reset_info->initial_pc = elf_entry; |
| parameters_base = (high + 1) & ~1; |
| param_ptr = param_blob; |
| |
| BOOTINFO1(param_ptr, BI_MACHTYPE, MACH_VIRT); |
| BOOTINFO1(param_ptr, BI_FPUTYPE, FPU_68040); |
| BOOTINFO1(param_ptr, BI_MMUTYPE, MMU_68040); |
| BOOTINFO1(param_ptr, BI_CPUTYPE, CPU_68040); |
| BOOTINFO2(param_ptr, BI_MEMCHUNK, 0, ram_size); |
| |
| BOOTINFO1(param_ptr, BI_VIRT_QEMU_VERSION, |
| ((QEMU_VERSION_MAJOR << 24) | (QEMU_VERSION_MINOR << 16) | |
| (QEMU_VERSION_MICRO << 8))); |
| BOOTINFO2(param_ptr, BI_VIRT_GF_PIC_BASE, |
| VIRT_GF_PIC_MMIO_BASE, VIRT_GF_PIC_IRQ_BASE); |
| BOOTINFO2(param_ptr, BI_VIRT_GF_RTC_BASE, |
| VIRT_GF_RTC_MMIO_BASE, VIRT_GF_RTC_IRQ_BASE); |
| BOOTINFO2(param_ptr, BI_VIRT_GF_TTY_BASE, |
| VIRT_GF_TTY_MMIO_BASE, VIRT_GF_TTY_IRQ_BASE); |
| BOOTINFO2(param_ptr, BI_VIRT_CTRL_BASE, |
| VIRT_CTRL_MMIO_BASE, VIRT_CTRL_IRQ_BASE); |
| BOOTINFO2(param_ptr, BI_VIRT_VIRTIO_BASE, |
| VIRT_VIRTIO_MMIO_BASE, VIRT_VIRTIO_IRQ_BASE); |
| |
| if (kernel_cmdline) { |
| BOOTINFOSTR(param_ptr, BI_COMMAND_LINE, |
| kernel_cmdline); |
| } |
| |
| /* Pass seed to RNG. */ |
| param_rng_seed = param_ptr; |
| qemu_guest_getrandom_nofail(rng_seed, sizeof(rng_seed)); |
| BOOTINFODATA(param_ptr, BI_RNG_SEED, |
| rng_seed, sizeof(rng_seed)); |
| |
| /* load initrd */ |
| if (initrd_filename) { |
| initrd_size = get_image_size(initrd_filename); |
| if (initrd_size < 0) { |
| error_report("could not load initial ram disk '%s'", |
| initrd_filename); |
| exit(1); |
| } |
| |
| initrd_base = (ram_size - initrd_size) & TARGET_PAGE_MASK; |
| load_image_targphys(initrd_filename, initrd_base, |
| ram_size - initrd_base); |
| BOOTINFO2(param_ptr, BI_RAMDISK, initrd_base, |
| initrd_size); |
| } else { |
| initrd_base = 0; |
| initrd_size = 0; |
| } |
| BOOTINFO0(param_ptr, BI_LAST); |
| rom_add_blob_fixed_as("bootinfo", param_blob, param_ptr - param_blob, |
| parameters_base, cs->as); |
| qemu_register_reset_nosnapshotload(rerandomize_rng_seed, |
| rom_ptr_for_as(cs->as, parameters_base, |
| param_ptr - param_blob) + |
| (param_rng_seed - param_blob)); |
| g_free(param_blob); |
| } |
| } |
| |
| static void virt_machine_class_init(ObjectClass *oc, void *data) |
| { |
| MachineClass *mc = MACHINE_CLASS(oc); |
| mc->desc = "QEMU M68K Virtual Machine"; |
| mc->init = virt_init; |
| mc->default_cpu_type = M68K_CPU_TYPE_NAME("m68040"); |
| mc->max_cpus = 1; |
| mc->no_floppy = 1; |
| mc->no_parallel = 1; |
| mc->default_ram_id = "m68k_virt.ram"; |
| } |
| |
| static const TypeInfo virt_machine_info = { |
| .name = MACHINE_TYPE_NAME("virt"), |
| .parent = TYPE_MACHINE, |
| .abstract = true, |
| .class_init = virt_machine_class_init, |
| }; |
| |
| static void virt_machine_register_types(void) |
| { |
| type_register_static(&virt_machine_info); |
| } |
| |
| type_init(virt_machine_register_types) |
| |
| #define DEFINE_VIRT_MACHINE(major, minor, latest) \ |
| static void virt_##major##_##minor##_class_init(ObjectClass *oc, \ |
| void *data) \ |
| { \ |
| MachineClass *mc = MACHINE_CLASS(oc); \ |
| virt_machine_##major##_##minor##_options(mc); \ |
| mc->desc = "QEMU " # major "." # minor " M68K Virtual Machine"; \ |
| if (latest) { \ |
| mc->alias = "virt"; \ |
| } \ |
| } \ |
| static const TypeInfo machvirt_##major##_##minor##_info = { \ |
| .name = MACHINE_TYPE_NAME("virt-" # major "." # minor), \ |
| .parent = MACHINE_TYPE_NAME("virt"), \ |
| .class_init = virt_##major##_##minor##_class_init, \ |
| }; \ |
| static void machvirt_machine_##major##_##minor##_init(void) \ |
| { \ |
| type_register_static(&machvirt_##major##_##minor##_info); \ |
| } \ |
| type_init(machvirt_machine_##major##_##minor##_init); |
| |
| static void virt_machine_7_2_options(MachineClass *mc) |
| { |
| } |
| DEFINE_VIRT_MACHINE(7, 2, true) |
| |
| static void virt_machine_7_1_options(MachineClass *mc) |
| { |
| virt_machine_7_2_options(mc); |
| compat_props_add(mc->compat_props, hw_compat_7_1, hw_compat_7_1_len); |
| } |
| DEFINE_VIRT_MACHINE(7, 1, false) |
| |
| static void virt_machine_7_0_options(MachineClass *mc) |
| { |
| virt_machine_7_1_options(mc); |
| compat_props_add(mc->compat_props, hw_compat_7_0, hw_compat_7_0_len); |
| } |
| DEFINE_VIRT_MACHINE(7, 0, false) |
| |
| static void virt_machine_6_2_options(MachineClass *mc) |
| { |
| virt_machine_7_0_options(mc); |
| compat_props_add(mc->compat_props, hw_compat_6_2, hw_compat_6_2_len); |
| } |
| DEFINE_VIRT_MACHINE(6, 2, false) |
| |
| static void virt_machine_6_1_options(MachineClass *mc) |
| { |
| virt_machine_6_2_options(mc); |
| compat_props_add(mc->compat_props, hw_compat_6_1, hw_compat_6_1_len); |
| } |
| DEFINE_VIRT_MACHINE(6, 1, false) |
| |
| static void virt_machine_6_0_options(MachineClass *mc) |
| { |
| virt_machine_6_1_options(mc); |
| compat_props_add(mc->compat_props, hw_compat_6_0, hw_compat_6_0_len); |
| } |
| DEFINE_VIRT_MACHINE(6, 0, false) |
